Think my engine is going to die :(

[Fazerider]

I don't whether this is possible, but I wonder if you can get the sump off without taking the engine out.
That may allow you to check for crank and big end play.

It is possible to take the sump off with the engine in-situ, but it may not help diagnosis... this is the view you'll have:





... access to the big ends is pretty limited!